Home / 28,647.98-39,532.34-15,900.55

Finding the Fourth Proportional to 28,647.98, 39,532.34 and 15,900.55

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Solution

The fourth proportional to 28,647.98, 39,532.34 and 15,900.55 is: 21,941.72

Step by Step Solution

  1. Step 1: Write the proportion equation
    28,647.98 : 39,532.34 = 15,900.55 : x
  2. Step 2: Convert to fraction form
    28,647.98/39,532.34 = 15,900.55/x
  3. Step 3: Cross multiply
    28,647.98x = 39,532.34 × 15,900.55
  4. Step 4: Simplify right side
    28,647.98x = 628,585,948.79
  5. Step 5: Solve for x
    x = 628,585,948.79/28,647.98
  6. Step 6: Final answer
    x = 21,941.72

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1.5x scale

Why These Related Problems?

These problems maintain the same ratio (1.38) or explore similar proportional relationships. Practicing with related ratios helps build understanding of proportional relationships.